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• Target type: Known_Class_II
  Transitions: OH_1665,CH3OH_107(II)
  

• Abstract

  A new methanol maser line at 107 GHz was discovered in five galactic sources. All of them are known Class 2 methanol masers. Toward Class 1 methanol maser sources, the 107-GHz line was found in absorption, or as rather weak quasi-thermal emission sources. The detection of these new methanol masers supports an assumption that the level population inversion is due to overpopulation of some K ladders relative to neighboring ladders.

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Line	Vpeak	FWHM	Fpeak	∫F dv	Telescope	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)			CH3OH (class II)	(km/s)	(km/s)	(Jy)	(Jy*km/s)		(arcsec)	Yes/No		(kpc)
1	02 27 4.7	+61 52 25.5	133.9488	1.0651	G133.947+1.064	W 3 (OH)	107 GHz (II);	-45.4(0.1)	4.3(0.2)	10.3(0.4)	46.8(3.0)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
	02 27 4.7	+61 52 25.5	133.9488	1.0651	G133.947+1.064	W 3 (OH)	107 GHz (II);	-43.3(0.6)	0.8(0.1)	20.9(0.4)	23.4(1.7)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
3	05 35 12.2	-05 24 6.4	209.0138	-19.4051	G209.015-19.405	Ori S6	107 GHz (II);	6.6(0.1)	4.2(0.3)	4.5(0.4)	19.5(2.3)	ONSALA	35	+H2O +CH3OH I +CH3OH II -OH	SFR_MIXED		17-22 May 1993
4	05 35 14.5	-05 22 29.6	208.9928	-19.3847	G208.993-19.385	Ori KL	107 GHz (II);	7.0(0.1)	9.2(0.3)	23.0(1.0)	226.0(12.0)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH +SiO	SFR_MIXED		17-22 May 1993
	05 35 14.5	-05 22 29.6	208.9928	-19.3847	G208.993-19.385	Ori KL	107 GHz (II);	7.6(0.02)	2.4(0.05)	64.2(1.2)	168.0(4.6)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH +SiO	SFR_MIXED		17-22 May 1993
6	05 35 27.5	-05 09 36.5	208.8159	-19.2392	G208.816-19.239	OMC 2	107 GHz (II);	11.4(0.3)	2.0(0.6)	2.5(0.5)	6.0(2.2)	ONSALA	35	+H2O +CH3OH I +CH3OH II	SFR_MIXED		17-22 May 1993
	05 35 27.5	-05 09 36.5	208.8159	-19.2392	G208.816-19.239	OMC 2	107 GHz (II);	14.2(0.6)	2.2(1.4)	1.3(0.4)	3.3(0.7)	ONSALA	35	+H2O +CH3OH I +CH3OH II	SFR_MIXED		17-22 May 1993
8	06 08 54.2	+21 38 36.6	188.9460	0.8900	G188.946+0.886	S 252	107 GHz (II);	10.6(0.04)	0.9(0.1)	10.1(1.0)	11.7(2.1)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED		17-22 May 1993
9	18 06 14.8	-20 31 40.2	9.6194	0.1942	G9.621+0.195	G9.62+0.19	107 GHz (II);	-0.8(0.2)	3.8(0.6)	6.0(0.6)	23.4(4.5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
	18 06 14.8	-20 31 40.2	9.6194	0.1942	G9.621+0.195	G9.62+0.19	107 GHz (II);	4.5(0.5)	3.6(1.3)	2.7(0.8)	9.8(4.6)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
11	18 08 38.4	-19 51 51.7	10.4723	0.0263	G10.472+0.026	W 31 (1)	107 GHz (II);	66.1(0.3)	8.8(0.9)	7.2(0.6)	68.0(8.8)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
	18 08 38.4	-19 51 51.7	10.4723	0.0263	G10.472+0.026	W 31 (1)	107 GHz (II);	75.7(0.6)	3.7(1.4)	2.7(0.8)	9.8(4.6)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
13	18 46 04	-02 39 21.5	29.9560	-0.0168	G29.956-0.016	G29.95-0.02	107 GHz (II);	97.7(0.4)	4.9(1.0)	2.9(0.6)	16.0(4.5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED		17-22 May 1993
14	18 46 36.3	-01 45 12.1	30.8206	0.2753	G30.819+0.273	G30.82+0.28	107 GHz (II);	102.7(0.2)	1.5(0.4)	3.7(0.8)	5.9(2.0)	ONSALA	35	+H2O -CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
15	19 01 46.2	+01 13 41.5	35.2038	-1.7380	G35.200-1.737	W 48	107 GHz (II);	41.3(0.03)	2.2(0.1)	15.4(0.4)	15.4(0.4)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED		17-22 May 1993
	19 01 46.2	+01 13 41.5	35.2038	-1.7380	G35.200-1.737	W 48	107 GHz (II);	45.0(0.04)	2.0(0.1)	11.9(0.4)	25.0(1.5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED		17-22 May 1993
17	19 23 42.1	+14 30 41.3	49.4879	-0.3800	G49.489-0.387	W 51	107 GHz (II);	56.5(0.4)	6.3(1.0)	1.8(0.2)	12.0(2.4)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
18	19 23 43.9	+14 30 36.4	49.4901	-0.3871	G49.489-0.387	W 51 (el/e2)	107 GHz (II);	55.6(0.05)	8.9(0.1)	16.2(0.2)	152.0(2.8)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
19	19 23 43.9	+14 29 25.4	49.4728	-0.3965	G49.489-0.387	W 51 (Metl)	107 GHz (II);	60.6(0.3)	1.9(0.7)	1.2(0.4)	2.0(1.5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
20	20 38 36.8	+42 37 59.5	81.8775	0.7838	G81.871+0.781	W 75 (N)	107 GHz (II);	8.4(0.3)	6.2(0.6)	2.9(0.2)	18.0(2.6)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED		17-22 May 1993
21	20 39 0.7	+42 22 50.8	81.7216	0.5722	G81.713+0.567	DR 21 (OH)	107 GHz (II);	-5.7(0.4)	2.7(1.0)	2.0(1.2)	6.0(4.1)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
	20 39 0.7	+42 22 50.8	81.7216	0.5722	G81.713+0.567	DR 21 (OH)	107 GHz (II);	-2.3(0.7)	5.0(1.1)	3.9(0.4)	20.6(4.5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR		17-22 May 1993
23	22 56 18.1	+62 01 49.3	109.8713	2.1141	G109.871+2.114	Cep A	107 GHz (II);	-2.2(0.03)	1.0(0.1)	24.4(1.2)	31.0(2.6)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
24	23 13 45.4	+61 28 9.7	111.5422	0.7767	G111.542+0.766	NGC 7538	107 GHz (II);	-59.2(0.1)	1.7(0.3)	10.1(1.2)	19.5(3.7)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
	23 13 45.4	+61 28 9.7	111.5422	0.7767	G111.542+0.766	NGC 7538	107 GHz (II);	-56.3(0.1)	3.1(0.2)	17.4(1.8)	58.5(7.5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993
26	23 13 46.4	+61 27 32.7	111.5403	0.7664	G111.542+0.766	NGC 7538 (IRS1)	107 GHz (II);	-57.8(0.4)	4.5(1.0)	1.6(0.4)	5.8(2.0)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR		17-22 May 1993

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Telescope	Beam	Detection	Class	Date
	(J2000)	(J2000)	(deg.)	(deg.)				(arcsec)	Yes/No
1	02 25 38.4	+62 05 41.2	133.7120	1.2109	G133.715+1.215	IC 1795	ONSALA	35	+H2O -CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
2	02 25 53.6	+62 04 10.6	133.7486	1.1979	G133.749+1.198	W 3 (3)	ONSALA	35	+H2O +CH3OH I -CH3OH II +OH	SFR	17-22 May 1993
3	05 39 27.6	+35 30 58	173.7182	2.3559	G173.718+2.356	G173.59+2.44	ONSALA	35	-CH3OH I +CH3OH II	UNK	17-22 May 1993
4	06 07 46.3	-06 23 8.6	213.7050	-12.6043	G213.705-12.597	Mon R2	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED	17-22 May 1993
5	06 08 35.4	+20 39 03	189.7788	0.3448	G189.777+0.345	S 252 A	ONSALA	35	+H2O -CH3OH I +CH3OH II +OH	SFR_MIXED	17-22 May 1993
6	06 14 36.7	+13 49 41.4	196.4520	-1.6780	G196.454-1.677	S 269	ONSALA	35	+H2O -CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
7	06 12 56.4	+17 59 53.8	192.5974	-0.0355	G192.599-0.048	S 255	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED	17-22 May 1993
8	06 41 9.7	+09 29 34.9	203.3155	2.0549	G203.316+2.055	NGC 2264	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR_MIXED	17-22 May 1993
9	07 32 10	-16 58 14.7	232.6214	0.9962	G232.621+0.996	G232.62+1.00	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
10	15 59 51.1	-01 38 17.6	8.3041	36.3355	G8.304+36.336	S 33	ONSALA	35	-CH3OH II		17-22 May 1993
11	18 06 19.2	-21 37 37.9	8.6682	-0.3573	G8.669-0.356	G8.67-0.36	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
12	18 14 39.8	-17 51 58.3	12.9095	-0.2610	G12.908-0.260	W 33 (A)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
13	18 27 42.8	-11 14 29.1	20.2398	0.0751	G20.237+0.065	G20.24+0.08	ONSALA	35	+H2O -CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
14	18 34 41	-09 00 52.8	23.0075	-0.4151	G23.010-0.410	G23.01-0.41	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH		17-22 May 1993
15	18 36 12.8	-07 12 35.1	24.7842	0.0794	G24.790+0.083	W 42	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
16	18 47 35	-02 01 5.9	30.6964	-0.0631	G30.702-0.068	G30.70-0.06	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
17	18 58 12.7	+01 40 36.5	35.1966	-0.7419	G35.197-0.743	G35.19-0.74	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
18	19 11 53.9	+09 35 51.4	43.7954	-0.1267	G43.795-0.127	G43.80-0.13	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993
19	19 23 38.2	+14 30 05	49.4716	-0.3709	G49.489-0.387	W 51 (Met5)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR	17-22 May 1993
20	19 23 43.2	+14 31 34.4	49.5031	-0.3772	G49.489-0.387	W 51 (Met4)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR	17-22 May 1993
21	19 23 45.2	+14 29 45.5	49.4802	-0.3984	G49.489-0.387	W 51 (Met3)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR	17-22 May 1993
22	19 23 46.5	+14 29 40.6	49.4815	-0.4037	G49.489-0.387	W 51 (Met2)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR	17-22 May 1993
23	20 09 30.4	+31 26 17	69.3910	-0.9086	G69.391-0.909	G64.9-0.9	ONSALA	35	-CH3OH II	EVOLVED	17-22 May 1993
24	20 38 59.6	+42 19 23.8	81.6738	0.5399	G81.713+0.567	DR 21	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH -SiO	SFR	17-22 May 1993
25	20 58 46	+44 20 27	85.5075	-0.9754	G85.508-0.975	S 117	ONSALA	35	-CH3OH II		17-22 May 1993
26	21 40 42.4	+58 16 9.7	99.9825	4.1696	G99.982+4.170	IC 1396 (N)	ONSALA	35	+H2O +CH3OH I -CH3OH II +OH	GALAXY	17-22 May 1993
27	22 20 13.1	+03 58 14.6	67.4803	-42.0606	G67.480-42.061	S 140	ONSALA	35	-CH3OH II		17-22 May 1993
28	23 13 42.1	+61 30 37.7	111.5511	0.8174	G111.555+0.825	S 158	ONSALA	35	-H2O -CH3OH II	SFR	17-22 May 1993
29	23 13 44.8	+61 26 50.7	111.5330	0.7567	G111.542+0.766	NGC 7538 (S)	ONSALA	35	+H2O +CH3OH I +CH3OH II +OH	SFR	17-22 May 1993

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